Deutsche Telekom is engaged in the telecommunications services and information technology sectors. Co. operates as an integrated telecommunications provider. It is organized into four operating segments: Germany, Europe, and the United States; and Systems Solutions, as well as Group Headquarters and Shared Services. Co. provides fixed-network lines, broadband lines and mobile communications. Co. also provides customized Information and Communication Technology (ICT) solutions for corporate customers under the T-Systems brand. The Group Headquarters and Shared Services segment comprises cross-segment management functions, real estate services, and mobility solutions, among others.

Engie Eps SA, formerly know as Electro Power Systems, is a France-based technology company. It focuses on energy storage systems and microgrids towards renewable sources and decentralized energy production. The Company owns a portfolio of hybrid energy storage systems (HyESS) offering fully integrated storage solutions for a wide range of applications, such as grid support and distributed energy solutions, microgrids and storage technologies, among others. The Company's technology is a spin-off of the Turin and Milan Polytechnics, is protected by 130 patents, registered in 33 countries worldwide and over 500 registered industrial secrets.